Free Newton's Laws of Motion MCQs with Answers
83 Newton's Laws of Motion MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Newton’s laws explain inertia, the relation between net force and acceleration, and action-reaction pairs. Questions involve free-body diagrams, balanced and unbalanced forces, F = ma, force as the rate of change of momentum, and identifying genuine third-law pairs, which act on different bodies.
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83 questions · page 5 of 5
- A. Zero
- B. 2.5 kg
- C. 5 kg
- D. 10 kg
Explanation: The reading of the spring balance in this case would be zero.When the lift falls with an acceleration of 10 m/s^2, the weight of the body…
Correct answer: Zero- A. It is equal to the weight of the man.
- B. It is greater than the force exerted by the floor on the man.
- C. It is less than the force exerted by the floor on the man.
- D. It is less than the weight of the man.
Explanation: As the lift is accelerating vertically downward so (g-a). The apparent weight of a man would become less than the actual weight.
Correct answer: It is less than the weight of the man.- A. They act in opposite directions
- B. They both act at the same point
- C. They both act on the same body
- D. They both have the same magnitude
Explanation: Two equal and opposite parallel forces not acting along the same line form a couple.
Correct answer: They both act at the same point